Bottom Feeder Mystery

[Online]

So I wake up one morning and all my Bottom Feeders are dead! Two Peppered Cory's , 3 Panda Cory's and 1 YoYo Loach.

All other fish, tetras, rainbows, Pleco s are all fine,

Anyone solve this mystery?

Trust me when I say, my water changes are quite routine and had done one 3 days prior, all conditions were excellent ,

Bar bar fight? Anyone know what could cause a sudden death of just bottom feeders?

 

[emerald76]

We need exact params,temp,tank size,and exact stock list as well as substrate type and feeding schedule and filter type

 

[Online]

Feed each morning ( combo of flakes shrimp pallets )
5 Corys
1 YoYo loach

1 clown Pleco
2 small rainbows
4 small tetras
1 zebra dino
3 dwarf gouramis

Nano Cube set up
With extra air stone and agitated surface
Planted
Normal white gravel

Trace of nitrates , ammonia free, ph good, water temp 79 degrees

Change water by 1/4 each week

 

[emerald76]

I must admit I'm stumped! This is really weird

 

[Online]

Had fish a long time. Never saw anything like this either. Pet store guys also stumped.

All other fish still doing great.

Must have been a bad bar fight on the bottom of my. Tank ????

 

[Katiekt]

I use to have a 40 gallon tank with peppered and panda corys in it. For some reason the corys always had a hard time surviving. My parameters were always good. And I mostly had platys. Go figure!